Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl With PF-80EDA Scopes: 21 to

With PF-80EDA Scopes: 21 to 63x

66") (46% of aperture diameter) Light Gathering Power (Compared to human eye) 843x Resolution (Rayleigh) 0

the peak quantum efficiency of ASI585MC Air is 91%

and 11" SCT and EdgeHD scopes

25" Tele Vue Barlow

Vintage Tele Vue 13mm Nagler Original Type 2"/1.25" Plossl With PF-80EDA Scopes: 21 toThis is a used original 13mm TeleVue Nagler. This has long since been superseded by the new Type 6 Naglers. The type 6 complete description is below, and is not completely applicable to this particular eyepiece. If you're looking for the eyepiece that revolutionized widefield astronomy, look no further here it is. It is in excellent condition: the optics are clear, and the barrel is lightly marked near the top: see the photos. However, it does not